NDLI: Electrochemical performances of as-cast and annealed La$_{0.8-x }$Nd$_{ x }$Mg$_{0.2}$Ni$_{3.35}$Al$_{0.1}$Si$_{0.05}$ (x = 0–0.4) alloys applied to Ni/metal hydride (MH) battery

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Electrochemical performances of as-cast and annealed La$_{0.8-x }$Nd$_{ x }$Mg$_{0.2}$Ni$_{3.35}$Al$_{0.1}$Si$_{0.05}$ (x = 0–0.4) alloys applied to Ni/metal hydride (MH) battery

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Rare Metals : Volume 32, Issue 1, February 2013

Rare Metals : Volume 31

Rare Metals : Volume 30

Rare Metals : Volume 29

Rare Metals : Volume 28

Electrochemical performances of as-cast and annealed La$_{0.8-x }$Nd$_{ x }$Mg$_{0.2}$Ni$_{3.35}$Al$_{0.1}$Si$_{0.05}$ (x = 0–0.4) alloys applied to Ni/metal hydride (MH) battery

Content Provider	Springer Nature Link
Author	Zhang, Yang Huan Ren, Hui Ping Yang, Tai Zhao, Chen Chen, Li Cui Shang, Hong Wei Zhao, Dong Liang
Copyright Year	2013
Abstract	The La–Mg–Ni-based A$_{2}$B$_{7}$-type La$_{0.8-x }$Nd$_{ x }$Mg$_{0.2}$Ni$_{3.35}$Al$_{0.1}$Si$_{0.05}$ (x = 0, 0.1, 0.2, 0.3, and 0.4) electrode alloys were prepared by casting and annealing. The influence of the partial substitution of Nd for La on the structure and electrochemical performances of the alloys was investigated. The structural analysis of X-ray diffraction and scanning electron microscopy reveals that the experimental alloys consist of two major phases: (La,Mg)$_{2}$Ni$_{7}$ with the hexagonal Ce$_{2}$Ni$_{7}$-type structure and LaNi$_{5}$ with the hexagonal CaCu$_{5}$-type structure as well as some residual phases of LaNi$_{3}$ and NdNi$_{5}$. The electrochemical measurements indicate that an evident change of the electrochemical performance of the alloys is associated with the substitution of Nd for La. The discharge capacity of the alloy first increases then decreases with the growing Nd content, whereas their cycle stability clearly grows all the time. Furthermore, the measurements of the high rate discharge ability, the limiting current density, and hydrogen diffusion coefficient all demonstrate that the electrochemical kinetic properties of the alloy electrodes first augment then decline with the rising amount of Nd substitution.
Starting Page	150
Ending Page	158
Page Count	9
File Format	PDF
ISSN	10010521
Journal	Rare Metals
Volume Number	32
Issue Number	2
e-ISSN	18677185
Language	English
Publisher	Nonferrous Metals Society of China
Publisher Date	2013-04-24
Publisher Place	Springer Berlin Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	A$_{2}$B$_{7}$-type electrode alloy Substitution La with Nd Structure Electrochemical performance Metallic Materials Nanotechnology Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Inorganic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Physical and Theoretical Chemistry Condensed Matter Physics

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